Operator&#39;s chair



"c, l.. KNoTT OPERATOR'S CHAIR Filed Jan. 8, 192g To @ZZ whom t mayconcem.;

Patented` Sept. 4, 1923.

PATENT OFFICE. 1

cLYnE Ll Knorr, OE BEVERLY, MAssEcnUsE'r'rs, nssmNcE roUNrrEn SHOE MA- CHINEEY coEroEArIoN, OE 'PATEEsoi-I, NEW JERSEY, ,AfcOEPoEETIoN OE lNEW JERSEY.' Y

n OEEEATORS o CHAIR.

*Application Elea Januaryis, le20. serial No. 350,121.

,Be it known that l, CLYDE L.' Knorr, a citizen of the UnitedStates, residingat Beverly,` in, thecounty of Essex and y.State of -Massachusetts, have v. invented certain improvements in Operators Chairs, of

which the` following descriptiomlin connection withY the accompanying drawings, ,1sV a specification, likefreference -characters on the'dra'wings Vindicating like' parts inf-the severaliigures. Y Y This invention relatesvto chairs-for. use

in factories and, particularly, to` chairs which maybe secured in position adgacent, orattached--to, factorymachines and which maybe adjusted to ysuit the requirements of` each individual operator or class owork and Athen be folded underneath the machines when not in use. ein object of the .invention is .t0 produce alchair o'this type which will be especially theniachine for dillerent kinds- O work.

useful in shoe facto-ries inrfconnectionwith various shoe making machines.`

A feature of the invention consists `in a novelfoot rest which is adjust-able relativelyto the seat to accommodate opera tors of di'erent stature and which' is so constructed andgarranged that it does not need-toV be readjusted when `the seat `is raised, lowered or swung toward and from Other 4features ot the` invention consist in improved meansv which, without sacrifice of gene-ral utlilitygallow thefchairs to be ap plied readily to existing machines vwithout altering'said machines and in so 'constructingthe chairs that they may' be securely fastened to such machines and still told compactly underneath lthe machines Ywhen notin use.

Another feature of theinventionfconsists in providing ya novel supporting means which, by. engagement-with the floor, will hOld the chair securely in f position whether the chair is'in .use or fcldeduuder themachine. r f I :For convenience, j in" the following; descriptionand 'in the claims, the -word chair will bej used generically, Aas lin the foregoing, tof indicate yany rorgz'tnization having? the characteristics hereinset forth, i

- folded position; and

yto move in f its groove.

whether the 'invention be embodied in a stool, a chair,f a bench or the like, and the word scat will Lbe? used to define the hereinafter described member 38 upon whichY .attached to a clicking machine and in oper- .ative'positiong Y y Fig. 2 is side elevation of the chair in t Fig. 3 is a detail of constructionA showing the means for securing the chair'. to the machine. i Y

Referring t0 thefdrawings, 10 is the usual cutting block which is supported onthe bed 12 ot the clicking machine. 14, k141 represent-s the supporting legs of the machine which are held together by the frontV tie-ro l 16 and the rear tiered-,18`r each oi which is a cylindrical member. The details fof con struction of the yclicking machine are not pertinent "to this invention and, accordingly are not illustrated in the drawing.V

Furthermore, the chair may be mounted upon numerous other types-of machines and still be withinthe scope of .the invention las.

defined in the claims.

y @ne part of the chair consists of a swinglng member or lsupporting column 2O which is biurcated and which-has twov feet 21, 21

diverging from the lower portion-thereof; At the end of each orn these feet is a. hooksh/aped claw 22 -or engagement withk the tie rod 16.` Each hook-shaped claw, is held in engagement with vthetie rod` 16 vby means of a 'retaining collar composed of two members-2t and,A 26 which may `be securedtogcther and yclamped on theJ ltie yrod in any desired longitudinal position by means of binding screws 28. ,Each claw hasa side n boss, substantially 4semi-circ'ula-r in shape, which fits intoman annular recess 30y in its vretaining collar.' By means-of these complement-ally shaped surfaces Aon the claws and collars, each` claw is prevented from bei-ng detached vfromV the tie rod 16 although the claws' are permitted to turn Vabout the tie, rod and collars becauseeach boss is free Although only one retaining collar is shown in the drawings,

it will be understood that the entire chair may be adjusted laterally ot the machine by locating the two collars in proper position. along the tie rod 16. y

A seat post 32 is mounted in telescopic engagement with the column and carries at its upper end, each pivotally mounted on a transverse horizontal. axis, a seat trame 34 and a scat bracket 3G. rlhe seat 'trame carries a seat 3S of suitable size which is illustrated in dash lines in Fig. 1. link is pivotally mounted on the lower end ot the column at 42. This vlink has mounted thereon a roller 44T which contacts with the tloor. `One position et this link is determined-by the engagement of an adjustable Ystop screw 46 with the lower end ol the column 20. When in this extreme position.V

the. link l0 serves asa support tor the` column in operative position and the. adjustment ot the stop screw 46 .provides tor in-and-out or longitudinal adjustment oI the seat. The seat bracket 536 is' supported by a brace 48 which is adjustably and pivot ally secured to the link t0 by a bolt 50, which may be located in any one et the set ot holes'52. The location oi the bolt 50 determines the height of the seat and the amount of telescopic engagement between the column 20and the seat post 32. .1l-.n ad justing scew all is mounted in the seatbracket and serves as a stop tor the pivotcd seat trame 34, which carries the seat 3S, and thus determines the angular position ot the seat. about a transverse horizontal axis.

A foot rest 56 is adjustably secured to the lower portion'otthe seat post 32 by a clamp screw 58. rlhis is possible because ot the ai'turcationY of the column 20. v lt will be seen` because the seat and the toot rest are both secured totheseat post, that the toot rest 5G may be adjusted relatively tothe seat 88 and this adjustment may remain constant if desired, irrespective of the adjusted height of' the seat.

y"When it is desired to fold the chair beneath themachine, it may be done by push` ing it forward so that the claws 22. 22, swing about the tie rod 16. As this is done, the weight of the .chair-seat and connected parts causes the link i() to remain in contact with the floor and the seat post 32 to telescope into theeolumn 20; the corner GO ot the link iinally coming into Contact with the floor and causing the roller lll to belitted therefrom. The vweight on the brace 48 tendsto continue this swinging motion ot the link, after the dead center is passed, untilA the brace i8 comes int-o contact with the boss on the footrest at 62. (This position is shown in Fig. 2.) Accordingly,` the chair is locked in folded position by gravity because the link tOfis then swung beyond its dead Vcenter and'it can'he released only incensi by a 'forward pull on the brace 48 which will cause the chair to return to the operative position illustrated in Fig. 1.

Erom the above description and drawings, it will be seen that this invention results in a simple and etlicient device for the purpose because' it can be adjusted in every possible way to meet all ot the requirementsot an operator, no matter what his or her stature may be, and because it can be folded out ot the way when not in use.

Having thus described the invention`r what is claimed as newY and desired to be secured by Letters Patent of the United States is 1. .i support tor a chair comprising, in combination, a fixed pivot, a member mounted to swing about said pivot and adapted to carry a chair seat, and a link pivotally connected to said member and ar-y ranged to maintain said meinberlin either of two extreme positions by Contact with the i floor.

2. A support for a chair comprising, in combination, a swinging member adapted to carry a chair seat and a link pivotally connectcd to said member and arranged to maintain said Vmember in either oi two eX- treme positions by contact with the floor, said link being adjustable to vary one of said positions so as to adjust theseat toward or Jfrom the machine. n

3. It support tor a chair comprising, in combination, a. swinging member adapted to carry a chair seat and a link pivotally connected to said member and arranged to maintain the seat in either operative or folded Vposition by contacting with the Hoor upon either one side or the other ot' a dead center.

el.. n chair comprising, in combination, a seat and a toot rest, said seat and said toot rest bei mounted to swing as a unit about a horizontal axis and being vertically adjustable as a unit, and said foot rest being separately adjustable relatively to the seat.

5. A chair comprising,I in combination, a supporting Vcolumn haring a tubular portion and a biurcated portion, a seat post in telescopic engagement with said tubular portion, a relatively adjustable seat and foot rest mounted on said seat post, said bifurcatcd portion beingV constructed and arranged to surround partially the portion of the seat post upon which the foot rest is mounted. I

6. A mounting for adjustably securing a chair to a machine comprising, incombination, a*cylindrical"member on the machine, a hook-shaped claw connected with the chair and adapted to engage the cylindrical mem'- ber and removable transversely therefrom, and a longitudinally adjustable collaron said cylindrical member, said collar and said claw having complementally shaped portions constructed and arranged to retain the claw in adjusted position on the cylindrical memtelescopic engagement with the seat post, a Y ber and permit rotation between the claw link pivotally connected tothe column, and and said member.

4 n a brace pivotally connecting the seat post 10 7. A folding .chair for operators of maand link.

5 chimes, comprising, in combination, a seat, In testimony whereof I have signed my a seat post, a swingingV member adapted to name to this specicatlon. be pvotally connected to a machine and in CLYDE L. KNOTT. 

